2006/09/11 by A. Cassan, Jean‐Philippe Beaulieu, J. -P. Beaulieu +54 · 1 citation
Physics and Astronomy · #Adaptive optics and wavefront sensing #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Bulge #Galaxy #Gravitational microlensing #Lens (geology) #Limb darkening #Magnification #Microlens #Optics #Physics #Point source #Stars #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1051/0004-6361:20054414
14 pages, 8 figures, accepted for publication in A&A (04/09/2006)
arxiv created 2006/09/11 · openalex publication_date 2006/09/12 · arxiv updated 2009/12/01 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/05
Aims. We present an analysis of OGLE 2004–BLG–254, a high-magnification () and relatively short duration ( days) microlensing event in which the source star, a Bulge K-giant, has been spatially resolved by a point-like lens. We seek to determine the lens and source distance, and provide a measurement of the linear limb-darkening coefficients of the source star in the I and R bands. We discuss the derived values of the latter and compare them to the classical theoretical laws, and furthermore examine the cases of already published microlensed GK-giants limb-darkening measurements.